Unit 5 Lesson 1 HW with Key

— cos2x(tanx + sin2x(cotx + — = (1 + cos cos2x(sec x + —sin2x tan2x sin x — tan2x = — cos x C. sin2x sin x cos x a. cos x d. sec2 x 5. csc x tan x — b. sec x sin x ... cos2x 2cosx = sin2 x = cos2 x + 2sinxcosx+ sin 2 x +1 sin x sin x = cos2 x + sin 2 x + 2sin xcosx = I + 2sin xcosx Now, starting on the right side, we have ................
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